When good is not enough, Camshaft time again.

Mean416 said

Yep. 400ft lbs would be weak for a 408 much less a 500 inch big block.

Click to expand...

I don't think you could limit a 408 to 400 #-ft of tq. Small cam, big cam...that stroke makes tq. Mine was over 500 #-ft and that's with an unported Super Victor intake that we all know could not possibly make any tq! And a 512, with its longer arm, will make a bunch more than a 408!

I'm going to ask the OP to keep us all posted as to what he learns. Meanwhile, I'll be :popcorn: .